12" BYPASS DAMPER, 101ABBD12

Fabricated from heavy gauge steel (22 gauge for 9-10 inches, 20 gauge for 12-18 inches), each cylinder features two rolled beads for structural integrity. The trailing end is crimped for ease of installation, with airflow direction clearly labeled. A high-density foam gasket provides an airtight and quiet seal. Bypass installation can be vertical or horizontal, with the counterbalance arm positioned on either side of the damper for added pivot clearance. The counterbalance weight is easily adjusted and securely held in place with a set screw. Celcon shaft bushings ensure quiet damper travel and minimize shaft wear. Accurate duct pressure is maintained throughout the distribution system, regardless of varying air quantities delivered to the conditioned zones.